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Date: Thu, 8 Mar 2007 04:56:24 -0800 (PST)
From: "Marty Lamb (JIRA)" <jira@apache.org>
To: commons-dev@jakarta.apache.org
Subject: [jira] Commented: (VFS-107) large Sftp transfers fail with
 OutOfMemoryError: Java heap space
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    [ https://issues.apache.org/jira/browse/VFS-107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12479298 ] 

Marty Lamb commented on VFS-107:
--------------------------------

Sorry, should have commented on this much sooner.  That seems to work for me - thanks!

> large Sftp transfers fail with OutOfMemoryError: Java heap space
> ----------------------------------------------------------------
>
>                 Key: VFS-107
>                 URL: https://issues.apache.org/jira/browse/VFS-107
>             Project: Commons VFS
>          Issue Type: Bug
>    Affects Versions: Nightly Builds
>         Environment: java version "1.5.0_04"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
> Java HotSpot(TM) Client VM (build 1.5.0_04-b05, mixed mode, sharing)
> Linux version 2.6.17-1.2142_FC4 (bhcompile@hs20-bc1-4.build.redhat.com) (gcc version 4.0.2 20051125 (Red Hat 4.0.2-8)) #1 Tue Jul 11 22:41:14 EDT 2006
>            Reporter: Marty Lamb
>         Attachments: SftpFileObject.java
>
>
> Calling SftpFileObject.getOutputStream() returns a descendant of ByteArrayOutputStream; nothing is written to the remote sftp server until the OutputStream is closed.  For large data transfers, this exhausts local resources.
> This is noted in the source for SftpFileObject:
> 	protected OutputStream doGetOutputStream(boolean bAppend) throws Exception
> 	{
> 		// TODO - Don't write the entire file into memory. Use the stream-based
> 		// methods on ChannelSftp once the work properly
> 		final ChannelSftp channel = fileSystem.getChannel();
> 		return new SftpOutputStream(channel);
> 	}
> although it is not clear what "once the[y] work properly" is referring to.

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